Speedometer Head: Testing and Inspection

1. Raise and support vehicle, then disconnect vehicle speed sensor connector.
2. Connect a suitable voltmeter between black wire pin of connector and ground.
3. Turn ignition to RUN position, reading should be approximately five volts. If satisfactory test vehicle speed sensor.
4. If reading is not five volts, turn ignition to Off position, then check continuity between distance speed sensor connector and cluster connector terminal C7. If satisfactory replace speedometer. If not satisfactory repair open circuit.